Naked Motorcycles
2011AJS NAC12 125
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The 2011 AJS NAC12 125 is an entry-level commuter bike designed for budget-conscious new riders seeking practical urban transportation. With its electric starter, lightweight 168kg frame, and manageable 770mm seat height, it prioritizes accessibility and ease of use. The bike excels as an affordable, reliable daily runabout for city riding and short-distance commuting.
- Capacity
- 124.0 ccm
- Engine
- Parallel Twin, four-stroke
- Gearbox
- 5-speed
- Dry weight
- 153.0 kg
- Seat height
- 770 mm
- Power
- 11.4 HP (8.4 kW) @ 10500 RPM
How it rides
Editorial estimate from the spec sheet - not lab tested- Best for
- It is designed as an entry-level sport-styled commuter for learners, not a genuine performance machine, given its 125cc twin producing under 12 horsepower.
- Built for
- It has a sporty look with double front discs and cruiser-like rear tyre proportions, but its performance is modest and its personality leans more toward relaxed novelty than aggression.
- Not ideal for
- This is not for experienced riders wanting real speed, highway touring capability, or any serious off-road use.
Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.
Will it fit you?
Worked out in your browser - nothing is sent to usEngine
- Capacity
- 124.0 ccm
- Power
- 11.4 HP (8.4 kW) @ 10500 RPM
- CO2 Emissions
- 3 CO2 g/km
- Engine type
- Parallel Twin, four-stroke
- Power/weight ratio
- 0.0745 HP/kg (dry)
- Bore x stroke
- 44.0 x 40.0 mm
- Cooling system
- Liquid
- Fuel system
- Carburettor
- Starting
- Electric
- Ignition
- Coil CDI
- Torque
- Not on record - add it
Transmission
- Gearbox
- 5-speed
- Transmission type
- Manual
- Final drive
- Chain
- Clutch
- Wet, multiplate
Dimensions & weight
- Wheelbase
- 1510 mm
- Seat height
- 770 mm
- Dry weight
- 153.0 kg
- Wet weight
- 168.0 kg
- Fuel capacity
- 18.00 litres
Chassis & suspension
- Front suspension
- Telescopic fork
- Rear suspension
- Twin reservoir shocks
Brakes & wheels
- Front brakes
- Double disc
- Rear brakes
- Single disc
- Front tyre
- 90/90-18
- Rear tyre
- 130/90-15
Other
- Color options
- Red
- Warranty
- 12
Compiled from manufacturer documentation and user contributions, corrected on an ongoing basis. Spotted something wrong? Tell us.
What changed, year to year
Differences highlighted| Specification | 2010 | 2011 |
|---|---|---|
| Capacity | 124 cc | 124 cc |
| Dry weight | 153 kg | 153 kg |
| Seat height | 770 mm | 770 mm |
| Fuel capacity | 18 L | 18 L |
Illustrative - generated automatically by diffing the year records already on file, not a manufacturer-published changelog.
Rider Reviews
Common questions
What is the engine size of the AJS NAC12 125?
The 2011 AJS NAC12 125 has a Capacity of 124.0 ccm (7.57 cubic inches).
What engine power does the AJS NAC12 125 have?
The 2011 AJS NAC12 125 has a Power of 11.4 HP (8.4 kW) @ 10500 RPM.
How many gears does the AJS NAC12 125 have?
The 2011 AJS NAC12 125 has a Gearbox of 5-speed.
How much does the AJS NAC12 125 weigh?
The 2011 AJS NAC12 125 has a Dry weight of 153.0 kg (337.3 pounds).
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